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Find the inverse of 5 under multiplic...

Find the inverse of 5 under multiplication modulo 11 on `Z_(11)` .

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The identity element on `Z_(11)` is `1`, under multiplication modulo 11.
Now the inverse of `5` will be `9` as `5 * 9 = 9 * 4 = 45 1 (mod 11)`.
So the inverse of `5` under multiplication modulo `11` is `9`
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